Finding the Fourth Proportional to 113,198.72, 156,215.16 and 70,781.84

Step by Step Solution

1. Step 1: Write the proportion equation
   113,198.72 : 156,215.16 = 70,781.84 : x
2. Step 2: Convert to fraction form
   113,198.72/156,215.16 = 70,781.84/x
3. Step 3: Cross multiply
   113,198.72x = 156,215.16 × 70,781.84
4. Step 4: Simplify right side
   113,198.72x = 11,057,196,460.69
5. Step 5: Solve for x
   x = 11,057,196,460.69/113,198.72
6. Step 6: Final answer
   x = 97,679.52